Swimming to Catalina (Stone Barrington Series #4)

Stone Barrington thought he'd heard the last of former girlfriend Arrington after she left him to marry Vance Calder, Hollywood's hottest star. The last thing Stone expected was a desperate call from Calder.

Long Synopsis:

Stone Barrington thought he'd heard the last of former girlfriend Arrington after she left him to marry Vance Calder, Hollywood's hottest star. The last thing Stone expected was a desperate call from Calder. Arrington has vanished, and her new fiancé wants Stone to come to LA and find her.
In a town where the sharks drive Bentleys and no one can be trusted, Stone soon discovers he's drowning in a sea of empty clues that takes him from Bel Air to Malibu to Rodeo Drive. Running out of time and leads, he needs to keep his head above water and find Arrington fast, or end up swimming with the fishes himself.